Dividends received from joint ventures.

No definition available.

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- Definition

The amount of increase (decrease) in investments in joint ventures accounted for using equity method through assets and liabilities valuation adjustments.

+ References

No definition available.

+ Details

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- Definition

The amount of increase in investments in joint ventures accounted for using equity method through capital contributions.

+ References

No definition available.

+ Details

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- Definition

Number of shares held by investor

+ References

No definition available.

+ Details

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The amount of investments in joint ventures accounted for using the equity method. [Refer: Total for all joint ventures [member]; Investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

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- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2024-03-27

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- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

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- Definition

The entity's share of the profit (loss) of joint ventures accounted for using the equity method. [Refer: Investments accounted for using equity method; Total for all joint ventures [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard
-URIDate 2024-03-27

+ Details

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INVESTMENT IN JOINT VENTURES - Summary of Changes to Investments in Joint Ventures (Detail) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of joint ventures [line items]
Beginning balance	R$ 11,742,442	R$ 11,221,356
Interest in earnings (losses) of joint ventures	(1,229,980)	1,695,945	R$ (92,179)
Asset and liability valuation adjustment	139,892	(7,428)
Capital increase	12,337	47,300
Dividends	(119,647)	(1,214,731)
Ending balance	R$ 10,545,044	11,742,442	11,221,356
Raizen S A [Member]
Disclosure of joint ventures [line items]
Shares issued by the joint venture	10,352,509,484
Shares held by Cosan	4,557,597,117
Ownership percentage (directly and indirectly)	30.87%
Beginning balance	R$ 11,693,876	11,221,356
Interest in earnings (losses) of joint ventures	(1,218,804)	1,694,679
Asset and liability valuation adjustment	139,892	(7,428)
Capital increase
Dividends	(119,647)	(1,214,731)
Ending balance	R$ 10,495,317	11,693,876	11,221,356
Raizen S A [Member] \| Direct
Disclosure of joint ventures [line items]
Ownership percentage (directly and indirectly)	5.01%
Raizen S A [Member] \| Indirect
Disclosure of joint ventures [line items]
Ownership percentage (directly and indirectly)	25.86%
Terminal Alvorada S.A [Member]
Disclosure of joint ventures [line items]
Shares issued by the joint venture	100,197,076
Shares held by Cosan	50,098,538
Ownership percentage (directly and indirectly)	50.00%
Beginning balance	R$ 48,566
Interest in earnings (losses) of joint ventures	(7,445)	1,266
Asset and liability valuation adjustment
Capital increase		47,300
Dividends
Ending balance	R$ 41,121	48,566
Terminal Alvorada S.A [Member] \| Direct
Disclosure of joint ventures [line items]
Ownership percentage (directly and indirectly)	50.00%
Terminal Alvorada S.A [Member] \| Indirect
Disclosure of joint ventures [line items]
Ownership percentage (directly and indirectly)
Radar Gestão de Investimentos S.A. [Member]
Disclosure of joint ventures [line items]
Shares issued by the joint venture	24,800,000
Shares held by Cosan	12,400,000
Ownership percentage (directly and indirectly)	50.00%
Beginning balance
Interest in earnings (losses) of joint ventures	(3,731)
Asset and liability valuation adjustment
Capital increase	12,337
Dividends
Ending balance	R$ 8,606
Radar Gestão de Investimentos S.A. [Member] \| Direct
Disclosure of joint ventures [line items]
Ownership percentage (directly and indirectly)	50.00%
Capital increase	R$ 12,337
Radar Gestão de Investimentos S.A. [Member] \| Indirect
Disclosure of joint ventures [line items]
Ownership percentage (directly and indirectly)